References ▼
For complete code, refer to the CNVWM demo.
#include "amvideo.h"void CopyWaveFormatEx (WAVEFORMATEX *wfex, BYTE *pArrayData){memcpy ( wfex, pArrayData, sizeof ( WAVEFORMATEX ) ) ;}void CopyVideoInfoHeader (VIDEOINFOHEADER *vih, BYTE *pArrayData){memcpy ( vih, pArrayData, sizeof ( VIDEOINFOHEADER ) ) ;}void AddAudioStream(IltmmWMProfileManager *pManager, IltmmWMProfile *pProfile, int nStreamNum, int nFormatTag, long lPrefBitrate, long lSamplesPerSec, int nChannels, BOOL bWithVideo){IltmmWMStreamConfig *pCodecFormat = NULL;IltmmMediaTypeDisp *pMediaType = NULL;WAVEFORMATEX wfex ;BOOL bCandidate;WAVEFORMATEX candidatewfex = {0};IltmmMediaTypeDisp *pCandidatemt = NULL;IltmmMediaTypeDisp *pMt = NULL;IltmmWMStreamConfig *pStream = NULL;long codecs;long formats;long lSize;BYTE *pArrayData = NULL;HRESULT hr;int codecindex;int formatindex;BSTR bstrData;long diff;BSTR stringData;BSTR stringData2;bCandidate = FALSE;// get the number of audio codecsIltmmWMProfileManager_GetCodecInfoCount(pManager, /*MEDIATYPE_Audio*/L"{73647561-0000-0010-8000-00AA00389B71}", &codecs);// search for matching codecfor(codecindex = 0; codecindex < codecs; codecindex++){IltmmWMProfileManager_GetCodecFormatCount(pManager, /*MEDIATYPE_Audio*/L"{73647561-0000-0010-8000-00AA00389B71}", codecindex, &formats);for(formatindex = 0; formatindex < formats; formatindex++){if(pCodecFormat){IltmmWMStreamConfig_Release(pCodecFormat);pCodecFormat = NULL;}hr = IltmmWMProfileManager_GetCodecFormat(pManager, /*MEDIATYPE_Audio*/L"{73647561-0000-0010-8000-00AA00389B71}", codecindex, formatindex, &pCodecFormat);if(pMediaType){IltmmMediaTypeDisp_Release(pMediaType);pMediaType = NULL;}hr = IltmmWMStreamConfig_GetMediaType(pCodecFormat, &pMediaType);IltmmMediaTypeDisp_get_FormatType(pMediaType, &bstrData);if (!wcscmp(_wcsupr(bstrData), /*FORMAT_WaveFormatEx*/L"{05589F81-C356-11CE-BF01-00AA0055595A}")){VARIANT var;IltmmMediaTypeDisp_get_Format (pMediaType, &var);SafeArrayAccessData(V_ARRAY(&var), (void**) &pArrayData);lSize = var.parray->cbElements * var.parray->rgsabound->cElements;CopyWaveFormatEx(&wfex, pArrayData);SafeArrayUnaccessData(V_ARRAY(&var));VariantClear(&var);diff = (wfex.nAvgBytesPerSec * 8 - lPrefBitrate);if(diff < 250 &&diff > -250 &&wfex.nSamplesPerSec == (unsigned int)lSamplesPerSec &&wfex.nChannels == nChannels &&wfex.wFormatTag == nFormatTag){if(bCandidate){if(bWithVideo){//// For audio/video configurations,// we want to// find the smaller blockalign.// In this case,// the blockalign is larger, so we want to// use the old format.//if (wfex.nBlockAlign <= candidatewfex.nBlockAlign){memcpy(&candidatewfex, &wfex, sizeof(WAVEFORMATEX));pCandidatemt = pMediaType;}}else{if (wfex.nBlockAlign >= candidatewfex.nBlockAlign){memcpy(&candidatewfex, &wfex, sizeof(WAVEFORMATEX));pCandidatemt = pMediaType;}}}else{bCandidate = TRUE;memcpy(&candidatewfex, &wfex, sizeof(WAVEFORMATEX));pCandidatemt = pMediaType;}}}}}if(bCandidate){VARIANT var;// modify the selected codec to support this bitrate and formatCoCreateInstance(&CLSID_ltmmMediaType,NULL,CLSCTX_INPROC_SERVER,&IID_IltmmMediaTypeDisp,(void**) &pMt);IltmmMediaTypeDisp_put_Type(pMt, /*MEDIATYPE_Audio*/L"{73647561-0000-0010-8000-00AA00389B71}");stringData = SysAllocStringLen(L"00000000", 150);stringData2 = SysAllocStringLen(L"{", 150);swprintf(stringData, 353, L"%0 8X");wcscat(stringData2, stringData);wcscat(stringData2, L"-0000-0010-8000-00AA00389B71}");IltmmMediaTypeDisp_put_Subtype(pMt, stringData2);IltmmMediaTypeDisp_put_FixedSizeSamples(pMt, TRUE);IltmmMediaTypeDisp_put_TemporalCompression(pMt, FALSE);IltmmMediaTypeDisp_put_SampleSize(pMt, candidatewfex.nBlockAlign);IltmmMediaTypeDisp_put_FormatType(pMt, /*FORMAT_WaveFormatEx*/L"{05589F81-C356-11CE-BF01-00AA0055595A}");IltmmMediaTypeDisp_get_Format (pCandidatemt, &var);IltmmMediaTypeDisp_SetFormatData(pMt, -1, var);IltmmWMProfile_CreateNewStream(pProfile, /*MEDIATYPE_Audio*/L"{73647561-0000-0010-8000-00AA00389B71}", &pStream);IltmmWMStreamConfig_put_StreamNumber (pStream, nStreamNum);IltmmWMStreamConfig_put_StreamName(pStream, L"Audio Stream");IltmmWMStreamConfig_put_ConnectionName (pStream, L"Audio");IltmmWMStreamConfig_put_Bitrate(pStream, candidatewfex.nAvgBytesPerSec * 8);IltmmWMStreamConfig_SetMediaType (pStream, pMt);IltmmWMProfile_AddStream(pProfile, pStream);IltmmMediaTypeDisp_Release(pMt);IltmmWMStreamConfig_Release(pStream);IltmmMediaTypeDisp_Release(pCandidatemt);}if(pCodecFormat){IltmmWMStreamConfig_Release(pCodecFormat);pCodecFormat = NULL;}if(pMediaType){IltmmMediaTypeDisp_Release(pMediaType);pMediaType = NULL;}}void AddVideoStream(IltmmWMProfileManager *pManager ,IltmmWMProfile *pProfile,int nStreamNum,long lFourCC,long lBitrate,long lWidth,long lHeight,long lFps,long lQuality,long lSecperKey){IltmmWMStreamConfig *pCodecFormat = NULL;IltmmMediaTypeDisp *pMediaType = NULL;VIDEOINFOHEADER vih;BOOL bCandidate;VIDEOINFOHEADER candidatevih;IltmmMediaTypeDisp *pCandidateMt = NULL;IltmmWMStreamConfig *pCandidateStream = NULL;long codecs;long formats;BSTR bstrData;BYTE *pArrayData = NULL;int codecindex;int formatindex;VARIANT var;SAFEARRAY sa;struct{LONG lowpart;LONG highpart;} Num64;bCandidate = FALSE;// get the number of video codecsIltmmWMProfileManager_GetCodecInfoCount(pManager, /*MEDIATYPE_Video*/ L"{73646976-0000-0010-8000-00AA00389B71}", &codecs);// search for matching codecfor(codecindex = 0; codecindex < codecs; codecindex++){IltmmWMProfileManager_GetCodecFormatCount (pManager, /*MEDIATYPE_Video*/ L"{73646976-0000-0010-8000-00AA00389B71}", codecindex, &formats);#ifdef DEBUGIltmmWMProfileManager_GetCodecName(pManager, /*MEDIATYPE_Video*/ L"{73646976-0000-0010-8000-00AA00389B71}", codecindex, &bstrData);OutputDebugString(OLE2A(bstrData));SysFreeString(bstrData);#endiffor(formatindex = 0; formatindex < formats; formatindex++){if(pCodecFormat){IltmmWMStreamConfig_Release(pCodecFormat);pCodecFormat = NULL;}IltmmWMProfileManager_GetCodecFormat (pManager, /*MEDIATYPE_Video*/ L"{73646976-0000-0010-8000-00AA00389B71}", codecindex, formatindex, &pCodecFormat);if(pMediaType){IltmmMediaTypeDisp_Release(pMediaType);pMediaType = NULL;}IltmmWMStreamConfig_GetMediaType (pCodecFormat, &pMediaType);IltmmMediaTypeDisp_get_FormatType (pMediaType, &bstrData);if (!wcscmp(_wcsupr(bstrData), /*FORMAT_VideoInfo*/ L"{05589F80-C356-11CE-BF01-00AA0055595A}")){VARIANT var;IltmmMediaTypeDisp_get_Format(pMediaType, &var);SafeArrayAccessData(V_ARRAY(&var), (void**) &pArrayData);CopyVideoInfoHeader(&vih, pArrayData);SafeArrayUnaccessData(V_ARRAY(&var));VariantClear(&var);if (vih.bmiHeader.biCompression == (unsigned long)lFourCC){bCandidate = TRUE;memcpy(&candidatevih, &vih, sizeof(VIDEOINFOHEADER));pCandidateMt = pMediaType;pCandidateStream = pCodecFormat;}}}}if(bCandidate){// modify the selected codec to support this bitrate and sizecandidatevih.dwBitRate = lBitrate;candidatevih.rcSource.right = lWidth;candidatevih.rcSource.bottom = lHeight;candidatevih.rcTarget.right = lWidth;candidatevih.rcTarget.bottom = lHeight;candidatevih.bmiHeader.biWidth = lWidth;candidatevih.bmiHeader.biHeight = lHeight;Num64.lowpart = (long)((long)(10000000.0 / lFps) % 0x10000);Num64.highpart = (long)((10000000.0 / lFps) / 0x10000);memcpy(&candidatevih.AvgTimePerFrame, &Num64, 8);// pass the data to ltmmMediaType via SAFEARRAYmemset(&sa, 0, sizeof(sa));sa.cbElements = sizeof(unsigned char);sa.cDims = 1;sa.fFeatures = (FADF_AUTO | FADF_FIXEDSIZE);sa.pvData = (void*)&candidatevih;sa.rgsabound[0].cElements = sizeof(VIDEOINFOHEADER);VariantInit(&var);V_VT(&var) = (VT_ARRAY | VT_UI1);V_ARRAY(&var) = &sa;IltmmMediaTypeDisp_SetFormatData(pCandidateMt, -1, var);IltmmWMStreamConfig_put_Quality(pCandidateStream, lQuality);IltmmWMStreamConfig_put_MaxKeyFrameSpacing(pCandidateStream, lSecperKey);IltmmWMStreamConfig_put_StreamNumber(pCandidateStream, nStreamNum);IltmmWMStreamConfig_put_StreamName(pCandidateStream, L"Video Stream");IltmmWMStreamConfig_put_ConnectionName(pCandidateStream, L"Video");IltmmWMStreamConfig_put_Bitrate (pCandidateStream, lBitrate);IltmmWMStreamConfig_put_BufferWindow(pCandidateStream, -1);IltmmWMStreamConfig_SetMediaType(pCandidateStream, pCandidateMt);IltmmWMProfile_AddStream (pProfile, pCandidateStream);IltmmWMProfile_ReconfigStream(pProfile, pCandidateStream);IltmmMediaTypeDisp_Release(pCandidateMt);IltmmWMStreamConfig_Release(pCandidateStream);}if(pCodecFormat){IltmmWMStreamConfig_Release(pCodecFormat);pCodecFormat = NULL;}if(pMediaType){IltmmMediaTypeDisp_Release(pMediaType);pMediaType = NULL;}}void AddMutexObject(IltmmWMProfile *pProfile, int nBaseStream, int nStreamCount){IltmmWMMutualExclusion *pExcl = NULL;HRESULT hr;int i;// create an exclusion objectIltmmWMProfile_CreateNewMutualExclusion(pProfile, &pExcl);// indicate that the streams differ by bit rate// see CLSID_WMMUTEX_Bitrate in the WMSDKIltmmWMMutualExclusion_put_Type(pExcl, L"{D6E22A01-35DA-11D1-9034-00A0C90349BE}");// mark all the streams for mutual exclusionfor(i = 0; i < nStreamCount; i++){hr = IltmmWMMutualExclusion_AddStream(pExcl, nBaseStream + i );}// assign the exclusion object to the profilehr = IltmmWMProfile_AddMutualExclusion(pProfile, pExcl);IltmmWMMutualExclusion_Release(pExcl);}void IltmmWMProfile_AddStream_Example (IltmmConvert *pConvert){IltmmWMProfileManager *pManager = NULL;IltmmWMProfile *pProfile = NULL;int i;// create an empty profileCoCreateInstance(&CLSID_ltmmWMProfileManager, NULL, CLSCTX_INPROC_SERVER, &IID_IltmmWMProfileManager, (void**) &pManager);IltmmWMProfileManager_put_SystemProfileVersion(pManager, ltmmWMT_VER_8_0);IltmmWMProfileManager_CreateEmptyProfile(pManager, ltmmWMT_VER_7_0, &pProfile);IltmmWMProfile_put_Name(pProfile, L"Custom Profile");IltmmWMProfile_put_Description(pProfile, L"Custom Profile Description");// add a single audio streamAddAudioStream( pManager, pProfile, 1, /*CODEC_AUDIO_MSAUDIO*/353, 8000, 8000, 1, TRUE);// add 5 video streams with different bit ratesfor(i = 0 ; i < 5; i++){AddVideoStream( pManager, pProfile, 2 + i, /*CODEC_VIDEO_WMV1*/0x31564D57,(1024 * 20) + i * 1024,320,240,5 * (i + 1),0,8);}// mark all the video streams for mutual exclusionAddMutexObject(pProfile, 2, 5);// Assign the pProfile to a convert objectIltmmConvert_put_WMProfile(pConvert, pProfile);// Free…IltmmWMProfileManager_Release(pManager);}